1. Products
  2. RF and Microwave
  3. RF Power Detectors
  4. Logarithmic RMS Detectors
  5. ADL5906


Features and Benefits

  • Accurate rms-to-dc conversion from 10 MHz to 10 GHz
  • Single-ended ±1 dB dynamic range: 67 dB at 2.14 GHz
       No balun or external input matching required
  • Response independent of waveform types, such as GSM/CDMA/W-CDMA/TD-SCDMA/WiMAX/LTE
  • Logarithmic slope: 55 mV/dB
  • Temperature stability: <±1 dB from −40°C to +125°C
  • Operating temperature: −55°C to +125°C
  • Supply voltage: 4.75 V to 5.25 V
  • Sleep current: 250 µA
  • Pin-compatible with ADL5902 and AD8363

Product Details

The ADL5906 is a true rms responding power detector that has a 67 dB measurement range when driven with a single-ended 50 Ω source. The easy to use input makes the ADL5906 frequency versatile by eliminating the need for a balun or any other form of external input tuning for operation up to 10 GHz.

The ADL5906 provides a solution in a variety of high frequency systems requiring an accurate rms measurement of signal power. The ADL5906 can operate from 10 MHz to 10 GHz and can accept inputs from −65 dBm to +8 dBm with varying crest factors and bandwidths, such as GSM-EDGE, CDMA, W-CDMA, TD-SCDMA, WiMAX, and OFDM-based LTE carriers. In addition, its temperature stability over the broad temperature range of −55°C to +125°C makes it ideally suited for a wide array of communications, military, industrial, and instrumentation applications.

Used as a power measurement device, VRMS is connected to VSET. The output is then proportional to the logarithm of the rms value of the input. In other words, the reading is presented directly in decibels and is scaled 1.1 V per decade, or 55 mV/dB; other slopes are easily arranged. In controller mode, the voltage applied to VSET determines the power level required at the input to null the deviation from the setpoint. The output buffer can provide high load currents.

Requiring only a single supply of 5 V and a few capacitors, it is easy to use and capable of being driven single-ended or with a balun for differential input drive. The ADL5906 has a low 250 µA sleep current when powered down by a logic high applied to the PWDN pin. It powers up within approximately 1.4 µs to its nominal operating current of 68 mA at 25°C.

The ADL5906 is supplied in a 4 mm × 4 mm, 16-lead LFCSP and it is pin compatible with the ADL5902 and the AD8363 TruPwr™ rms detectors. This feature allows the designer to create one circuit layout for projects requiring different dynamic ranges. A fully populated RoHS-compliant evaluation board is available.


  • Power amplifier linearization/control loops
  • Transmitter signal strength indication (TSSI)
  • RF instrumentation

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations


Design Tool


ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

Reference Designs (1)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
ADL5906ACPZN-R2 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm × 0.75 w/ EP)
ADL5906ACPZN-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm × 0.75 w/ EP)
ADL5906SCPZN-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm × 0.75 w/ EP)
Wafer Fabrication Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help


Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.